Cabin Travel Tips

The environment in-flight has some notable differences to the environment on the ground. Understanding the in-flight environment can accommodate a more comfortable journey.

Cabin Temperature

The in-flight temperature is maintained at 23–25°C.


  • To be comfortable, we recommend long-sleeved tops and pants or skirts made of thin material.

Cabin Humidity

The humidity inside the aircraft is low, at approximately 10–20%. You may feel discomfort due to low humidity as your skin, eyes, and nose may become dry.


  • Keep yourself well-hydrated by frequently drinking water, juice, and other beverages.
  • Drinking too much alcohol, coffee, or tea can have the reverse effect and cause your body to become dehydrated.
  • Passengers wearing contact lenses are advised to remove them and wear glasses instead in order to prevent dryness or inflammation of the eyes.
  • It is recommended to use moisturizer and water spray to keep your skin moisturized.

Cabin Atmospheric Pressure

The in-flight atmospheric pressure is maintained at a level similar to the altitude of 5,000–8,000 ft (1,524–2,438 m). This will not have any significant impact on passengers with normal health conditions.


  • If your ears feel congested during takeoff or landing due to the change of atmospheric pressure, try yawning lightly or drinking water. It is also a good idea to gently blow your nose while pinching the nostrils and keeping your mouth closed.
  • For young children, giving them a bottle of milk or food may help.

Cosmic Radiation Exposure

  • In general, passengers are exposed to approximately 0.001–0.003 mSv and 0.004–0.005 mSv of cosmic radiation per hour during short and long-haul flights respectively.
  • Considering that the radiation dose absorbed into the human body during an X-ray is approximately 0.02–0.04 mSv, the amount of cosmic radiation exposure and its effect on the human body during a flight can be regarded as insignificant.

Cabin Noise

Improvements in Korean Air’s soundproof panels and seats have gradually reduced noise levels so that they generally pose no inconvenience. In general, noise that can cause inconvenience to passengers is not generated inside the aircraft. However, during takeoff and landing, or in some seats near the engine, passengers may experience a slight rise in the noise level.


  • Feel free to ask cabin crew for earplugs.

Peanut Allergies

  • We cannot prevent other passengers from bringing peanut products into the aircraft. There is also the possibility that peanut particles from the previous flight may remain in the air or in the aircraft aisles and on seats. Therefore, it is difficult to guarantee an absolute peanut-free environment onboard.
  • Please inform us of your peanut allergies upon reservation and fill out the agreement during check-in.
  • For your safety, please be sure to prepare the necessary medication (e.g., EpiPen) by consulting your doctor in advance.

Animal Allergies

  • Korean Air will do its best to make accommodations for passengers with animal allergies by providing them with seats away from those of other passengers traveling with companion animals. Please note, however, that seat change is subject to seat availability and is not guaranteed.
  • Passengers who have an animal allergy are strongly advised to inform our staff of their medical condition upon reservation and must also fill out the agreement during check-in.
  • For your safety, please consult your doctor in advance and prepare the necessary medication and emergency medical kit. You and your accompanying passenger must be able to carry out any medical procedures prescribed by your doctor in the case of an emergency.